728 papers
The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.
At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.
Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.
The paper proposes a Rydberg-atom-based single-photon detector for dark matter haloscope experiments in the 10–50 GHz frequency range, which overcomes quantum measurement noise limitations of standard linear amplifiers to achieve scan rate enhancements up to for searching QCD axions with masses above 40 eV.
This paper reports the experimental observation of phase-coherent reaction dynamics and two-atom entanglement in Bose-condensed atoms and molecules near a Feshbach resonance, demonstrating phase doubling analogous to optical frequency doubling and establishing these quantum features as fundamental to "quantum many-body chemistry."
This paper demonstrates the first continuous-wave vacuum ultraviolet laser at 148.4 nm with sub-hertz linewidth, generated via four-wave mixing in cadmium vapor, thereby overcoming the final technical hurdle for realizing a Th-based nuclear clock and enabling new applications in quantum metrology and precision spectroscopy.
This paper demonstrates that warm rubidium vapor cells utilizing large optical depth and optimized near-resonant EIT schemes can achieve optical memory efficiencies of up to 44% and storage times of 1.5 ms across both and isotopes on their D transitions, providing practical guidelines for enhancing quantum memory performance in simplified experimental configurations.
This paper proposes a novel dark matter detection framework using matter-wave interferometers within an open-system effective field theory, demonstrating that dark matter can be identified through phase shifts and decoherence effects that exhibit distinct quantum statistical behaviors and span both Markovian and non-Markovian dynamics across a wide mass range.
This paper reports the first experimental observation of strong-field stabilization in a ground state using trapped neutral atoms to emulate extreme laser fields, confirming the predicted wavefunction bifurcation and non-monotonic ionization rates that had previously resisted detection due to theoretical controversy and intensity limitations.
This paper presents high-precision variational calculations for helium Rydberg states up to using quantum defect and expansions, which confirm a significant 9 discrepancy between theoretical predictions and experimental measurements for the ionization energy while providing unprecedented 20-figure accuracy for the nonrelativistic Ritz expansion.
This paper applies Short-Range Effective Field Theory expanded around the unitarity limit to study three- and four-boson systems, demonstrating that the binding energies and radii of He clusters can be accurately described by universal discrete scale invariance with only small perturbative corrections for finite scattering length, effective range, and four-body forces.
This paper presents a novel master proportional-integral-differential magnetic trap (MPIDMT) that successfully stably levitates a ferromagnetic particle during microgravity in the Einstein-Elevator drop tower, overcoming launch disturbances to enable the long-sought observation of pure Larmor precession in macroscopic free fall.
This paper reports the first observation of metrologically useful spin-squeezed states in polar CaF molecules trapped in an optical tweezer array, demonstrating enhanced sensing capabilities, non-classical correlations, and long-lived storage of entanglement via dipolar interactions and Floquet engineering.